Safety and emergenciesQuestion 127 of 1700
What is the main cause of a myocardial infarction?
- Too little blood and oxygen reaching part of the heart
- Too much oxygen reaching the heart muscle at once
- A blocked vein in the lower part of the leg
- Swelling of the lining of the lungs and airway
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Correct answer: Too little blood and oxygen reaching part of the heart
An MI happens when part of the heart muscle gets too little blood and oxygen, and the cells die.
Source: Nursing Assistant (Reuter), 3.2: Emergency Situations
Questions last reviewed: 18 October 2026